EURASIP Journal on Wireless Communications and Networking 2005:4, 554–564 c ○ 2005 X. Liu and M. Haenggi Throughput Analysis of Fading Sensor Networks with Regular and Random Topologies
EURASIP Journal on Wireless Communications and Networking 2005:4, 554–564 c ○ 2005 X. Liu and M. Haenggi Throughput Analysis of Fading Sensor Networks with Regular and Random Topologies
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DOI：
10.1155/wcn.2005.554
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发表时间：
2005-09
影响因子：
2.6
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中科院分区：
文献类型：
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我们给出了在瑞利衰落信道中具有开槽ALOHA MAC协议的传感器网络的平均链路吞吐量的封闭表达式。我们在吞吐量、传输效率和传输容量方面比较了三种常规拓扑网络。特别地，对于方形晶格网络，我们提出了最大吞吐量和最佳传输概率相对于信干扰比阈值的敏感性分析。对于节点按二维泊松点过程分布的随机网络，对其平均吞吐量进行了解析表征和数值计算。结果表明，尽管在相同的链路距离下，规则网络的平均链路吞吐量仅略高于随机网络，但在考虑多跳连接的端到端吞吐量时，规则拓扑具有显著的优势。
We present closed-form expressions of the average link throughput for sensor networks with a slotted ALOHA MAC protocol in Rayleigh fading channels. We compare networks with three regular topologies in terms of throughput, transmit efficiency, and transport capacity. In particular, for square lattice networks, we present a sensitivity analysis of the maximum throughput and the optimum transmit probability with respect to the signal-to-interference ratio threshold. For random networks with nodes distributed according to a two-dimensional Poisson point process, the average throughput is analytically characterized and numerically evaluated. It turns out that although regular networks have an only slightly higher average link throughput than random networks for the same link distance, regular topologies have a significant benefit when the end-to-end throughput in multihop connections is considered.